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Mathematics
Problem
In parallelogram
P
Q
R
S
PQRS
P
QR
S
, diagonal
P
R
PR
P
R
is drawn. If
ar
(
△
P
R
S
)
=
26
cm
2
\text{ar}(\triangle PRS)=26\,\text{cm}^2
ar
(
△
P
R
S
)
=
26
cm
2
, find
ar
(
P
Q
R
S
)
\text{ar}(PQRS)
ar
(
P
QR
S
)
. a)
78
cm
2
78\,\text{cm}^2
78
cm
2
b)
52
cm
2
52\,\text{cm}^2
52
cm
2
c)
26
cm
2
26\,\text{cm}^2
26
cm
2
d)
39
cm
2
39\,\text{cm}^2
39
cm
2
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